Packaging box

ABSTRACT

A packaging box includes a bottom plate, two cover plates, two external plates, two internal plates, and four flaps. Each of the flaps has an engaging opening. When the packaging box is formed, the four flaps are respectively folded to closely contact the corresponding external plates, and the two internal plates are respectively folded to be inserted into the engaging openings of the two flaps on the corresponding sides, to save materials of the packaging box.

CROSS-REFERENCE TO RELATED APPLICATIONS

This Non-provisional application claims priority under 35 U.S.C. §119(a) on Patent Application No(s). 201820465572.0 filed in People'sRepublic of China on Apr. 3, 2018, the entire contents of which arehereby incorporated by reference.

BACKGROUND Technical Field

The disclosure discloses a packaging box and, more particular, to apackaging box of an electronic product.

Related Art

As the technology progresses, various electronic products emerge. Ahighly-precise and pretty fragile electronic product, being extremelyprone to be damaged due to impact of external environment such as water,dust, and collision force during delivery, has a much higher requirementon a packaging structure.

To reduce a damage rate of a commodity during delivery, functions ofwaterproofing, dust-proofing, and anti-seismic are basic functions thata protective packaging structure needs to have. Currently, a relativelycommon method is to accommodate an electronic product into a packagingbox to protect the electronic product.

However, as environmental protection awareness is increasingly higher,effective reduction of the amount of materials used for the packagingbox can help meet a requirement of energy conservation and environmentprotection.

SUMMARY

In view of this, an objective of the disclosure is to provide apackaging box to improve the prior art.

The disclosure discloses a packaging box including a bottom plate, twocover plates, two external plates, two internal plates, and four flaps.The two cover plates are respectively connected to two opposite sides ofthe bottom plate along a first direction. The two external plates arerespectively connected to another two opposite sides of the bottom platealong a second direction, and the second direction is perpendicular tothe first direction. The two internal plates are respectively connectedto outer sides of the corresponding external plates along the seconddirection. Sides of the two internal plates away from the correspondingexternal plates respectively have two flanges, and a length of theinternal plate along the second direction is less than a length of theexternal plate along the second direction. Two opposite sides of eachcover plate that are distributed along the second direction arerespectively connected to a flap, and each of the flaps has an engagingopening. When the two cover plates and the two external plates arerespectively folded toward the bottom plate to form the packaging box,the four flaps are respectively folded to closely contact thecorresponding external plates, and the two internal plates arerespectively folded to be inserted into the engaging openings of the twoflaps on the corresponding sides.

In an embodiment, the two cover plates may respectively be a front coverplate and a rear cover plate.

In an embodiment, the packaging box may further include a box coverportion and an inserting tongue portion. The box cover portion may beconnected to the rear cover plate, and the inserting tongue portion maybe connected to the box cover portion.

In an embodiment, each of the internal plates may have an extendingportion and an inserting portion, and the extending portion may beconnected to the corresponding external plate. The inserting portion maybe connected to the extending portion, and the two flanges may beprovided on the inserting portion.

In an embodiment, a width of the inserting portion along the firstdirection may be less than a width of the external plate along the firstdirection.

In an embodiment, a width of the inserting portion along the firstdirection may be less than an engaging opening width formed by theengaging openings of the two flaps on the corresponding sides along thefirst direction.

In an embodiment, the flanges may be formed on two sides of theinserting portion and may be fixed into the engaging openings of the twoflaps on the corresponding sides, and a width of the two flanges alongthe first direction may be greater than the engaging opening width.

In an embodiment, the two external plates may respectively include acompensation portion connected to the corresponding internal plate.

In the present disclosure, by using the packaging box, a height of theinternal plate is effectively reduced, so that the amount of materialsused for the packaging box may be effectively reduced. In addition, forthe packaging box, the inserting portion of the internal plate mayfurther be inserted into the engaging opening of the flap, thereby moreeffectively improving the strength of the structure of the packagingbox.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic expanded view of a packaging box according to anembodiment of the present disclosure; and

FIG. 2 is a three-dimensional schematic diagram of a part of a packagingbox according to an embodiment of the present disclosure.

DETAILED DESCRIPTION

The following embodiments are described in detail with reference to theaccompanying drawings. However, the provided embodiments are notintended to limit the scope of the present disclosure, and thedescriptions of operations of a structure are not intended to limit anexecution sequence of the structure. Any apparatus that has anequivalent efficacy and that is generated by a structure formed byrecombination of components shall fall within the scoped of the presentdisclosure. In addition, the accompanying drawings are merelyillustrative and are not drawn to original scale. For ease ofunderstanding, same or similar components in the following descriptionsare described by using same symbols.

In addition, unless specifically noted, the terms used in thespecification and the claims usually have ordinary meaning that theterms have when being applied to the art, the content of this disclosureand special content. Some terms used to describe the present disclosureare discussed below or in another part in this specification, to provideadditional instructions on descriptions of the present disclosure for aperson skilled in the art.

The “first”, “second”, and the like used in the specification do notspecially indicate an order or sequence, and are not intended to limitthe present disclosure. Rather, they are merely used for distinguishingelements or operations described by using same technical terms.

The terms used in the specification such as “comprise”, “include”,“have”, and “contain” are open expressions, and should be interpreted as“include but is not limited to”.

FIG. 1 is a schematic expanded view of a packaging box according to anembodiment of the present disclosure, and FIG. 2 is a three-dimensionalschematic diagram of a part of a packaging box according to anembodiment of the present disclosure. As shown in the figures, thepackaging box 100 has a bottom plate 170, two cover plates, such as afront cover plate 180 and a rear cover plate 160, two external plates140, two internal plates 150, and a group of flaps 130.

The two cover plates are respectively connected to two opposite sides ofthe bottom plate 170 along a first direction 210, and the two externalplates 140 are respectively connected to another two opposite sides ofthe bottom plate 170 along a second direction 220. That is, the twocover plates and the two external plates 140 are respectively connectedto the four sides of the rectangle bottom plate 170. The first direction210, i.e. a direction of a Y axis, is perpendicular to the seconddirection 220, i.e. a direction of an X axis.

The two internal plates 150 are respectively connected to outer sides ofthe corresponding external plates 140 along the second direction 220.That is, the external plate 140 is connected between the internal plate150 and the bottom plate 170. The group of flaps 130 are respectivelyconnect to two opposite sides of the two cover plates. In addition, alength of the internal plate 150 along the second direction 220 is lessthan a length of the external plate 140 along the second direction 220.That is, a height 156 of the internal plate 150 is less than a height144 of the external plate 140.

Compared with a conventional packaging box, the packaging box 100effectively reduces the height of the internal plate 150, therebyeffectively reducing an amount of paper needed. The packaging box 100 inFIG. 1 is taken for example. When the height 156 of the internal plate150, in other words, the length of the internal plate 150 along thesecond direction 220, is designed to be one third of the height 144 ofthe external plate 140, in other words, one third of the length of theexternal plate 140 along the second direction 220, paper in a hatchedarea 200 in FIG. 1 may be completely saved, thereby effectively reducingthe amount of paper used for the packaging box, and further reducingproduction costs of the packaging box.

In addition, the group of flaps 130 includes four flaps. For example,two first flaps 132 are respectively connected to the two opposite sidesof the rear cover plate 160 along the second direction 220, and twosecond flaps 134 are respectively connected to the two opposite sides ofthe front cover plate 180 along the second direction 220. Each firstflap 132 includes a first engaging opening 133, and each second flap 134includes a second engaging opening 135.

When the front cover plate 180, the rear cover plate 160, and the twoexternal plates 140 are respectively folded toward the bottom plate 170to form the packaging box, the two first flaps 132 and the two secondflaps 134 are respectively folded to closely contact the correspondingexternal plates 140, and the two internal plates 150 are respectivelyfolded to be inserted into the first engaging openings 133 of the firstflaps 132 and the second engaging openings 135 of the second flaps 134that are on the corresponding sides.

In an embodiment, each internal plate 150 includes an extending portion151 connected to a corresponding external plate 140 and an insertingportion 153 connected to the extending portion 151. A width 154 of theinserting portion 153 along the first direction 210 is less than a width142 of the external plate 140 along the first direction 210.

Please refer to FIG. 2. When the first flap 132 and the second flap 134are folded to closely contact the corresponding external plates 140, thefirst engaging opening 133 of the first flap 132 and the second engagingopening 135 of the second flap 134 form an engaging opening width 131,and the inserting portion 153 is inserted into the first engagingopening 133 and the second engaging opening 135 thus to be fixedtherein, to effectively engage the internal plate 150, the first flap132, the second flap 134, and the external plate 140 together, therebyfurther improving the strength of the structure of the packaging box 100and effectively protecting a product placed in the packaging box 100.

In an embodiment, the width 154 of the inserting portion 153 along thefirst direction 210 is less than the engaging opening width 131 formedby the first engaging opening 133 and the second engaging opening 135.

Please refer to FIG. 1 and FIG. 2. The inserting portion 153 furtherincludes two flanges 157, formed on two sides of the inserting portion153 to be fixed into the first engaging opening 133 and the secondengaging opening 135, and a width 152 of the two flanges 157 along thefirst direction 210 is greater than the engaging opening width 131.

In an embodiment, the packaging box 100 further includes a box coverportion 120 connected to the rear cover plate 160 and an insertingtongue portion 110 connected to the box cover portion 120, to form ansealed packaging box 100. However, the present disclosure is not limitedthereto. In addition, the external plate 140 further includes acompensation portion 146 for compensating for the thickness of materialsof the packaging box 100 when the packaging box 100 is folded.

In conclusion, the packaging box in the preferred embodiment of thepresent disclosure effectively reduces a height of the internal plate,and therefore may effectively reduce the amount of paper needed by thepackaging box. In addition, by inserting the inserting portion of theinternal plate into the engaging opening of the flap, the strength ofthe structure of the packaging box may be more effectively improved.

Although the present disclosure has been disclosed above through theembodiments, the above embodiments are not intended to limit the presentdisclosure. A person of ordinary skill in the art may make variousmodifications and improvements without departing from the spirit andscope of the present disclosure. Therefore, the protection scope of thepresent disclosure is subject to the appended claims.

What is claimed is:
 1. A packaging box, comprising: a bottom plate; twocover plates respectively connected to two opposite sides of the bottomplate along a first direction; two external plates respectivelyconnected to another two opposite sides of the bottom plate along asecond direction, wherein the second direction is perpendicular to thefirst direction; two internal plates respectively connected to outersides of the corresponding external plates along the second direction,wherein sides of the two internal plates away from the correspondingexternal plates respectively have two flanges, and a length of theinternal plate along the second direction is less than a length of theexternal plate along the second direction; and four flaps, wherein twoopposite sides of each cover plate that are distributed along the seconddirection are respectively connected to a flap, each of the flaps has anengaging opening, and when the two cover plates and the two externalplates are respectively folded toward the bottom plate to form thepackaging box, the four flaps are respectively folded to closely contactthe corresponding external plates, and the two internal plates arerespectively folded to be inserted into the engaging openings of the twoflaps on the corresponding sides.
 2. The packaging box according toclaim 1, wherein the two cover plates are respectively a front coverplate and a rear cover plate.
 3. The packaging box according to claim 2,further comprising a box cover portion and an inserting tongue portion,wherein the box cover portion is connected to the rear cover plate, andthe inserting tongue portion is connected to the box cover portion. 4.The packaging box according to claim 1, wherein each of the internalplates has an extending portion and an inserting portion, the extendingportion is connected to the corresponding external plate, the insertingportion is connected to the extending portion, and the two flanges areprovided on the inserting portion.
 5. The packaging box according toclaim 4, wherein a width of the inserting portion along the firstdirection is less than a width of the external plate along the firstdirection.
 6. The packaging box according to claim 4, wherein a width ofthe inserting portion along the first direction is less than an engagingopening width formed by the engaging openings of the two flaps on thecorresponding sides along the first direction.
 7. The packaging boxaccording to claim 6, wherein the flanges are formed on two sides of theinserting portion and are fixed into the engaging openings of the twoflaps on the corresponding sides, and a width of the flanges along thefirst direction is greater than the engaging opening width.
 8. Thepackaging box according to claim 1, wherein the two external platesrespectively comprise a compensation portion connected to thecorresponding internal plate.